Block molding machine



Dec. 7 1948. w. BRISCOE 2,455,553

BLOCK MOLDING MACHINE Filed Dec. 19, 1945 3 Sheets-Sheet l Tic .42.

IN V EN TOR.

I lP/s c'ae INTO/2N5).

Dec. 7, 1948. J. w. BR|sco!-: 2,455,553,

BLOCK MOLDING MACHINE Filed Dec. 19, 1945 s sheets-sheet 2 IN V EN TOR.

' jl/B/Fl-Scoe,

. BY Wm.

HTTOKNEX v Dec. 7, 1948.

J. w. BRISCOE V BLOCK MOLDING MACHINE Filed Dec. 19, 1945 3 Sheets-Sheet 3 4 V I 5 g 7 y: I I I Q INVENTOR.

Z M Bxrxsqoe,

HT'I'OIENEX Patented Dec 7,

' e UNI-TE S TATES PATENT OFFICE- This ihventionrelates oamachine for men: lr g concrete blocksrand has particular reference to hydraulic operating means forsuch machine.

It is-the g nererebjeet ofmy invention to providea machine of the class referredtoin which the operations of compressing the chargeih {the mold; and of subsequently e rpelling the "cornupressed block are eflectedby means of hydraulic pressuredevices. l *These and other obiects oi; the invention will be apparent from the following detailed descriptionand by referring to the accompanyingdrawings; or which? i 55 1 Fig. 1 isa frontelevational view, adevic 'embodying theinventidn}- i Fig. 2 is a seotional view ofthe devicetaken substantially through the centerf thereof; v Fig.3 "is an end view or the device with parts thereofbrokenaway for the sake or cleamess} Fig. 4 *isa sectional plan view of the dovi-ce taken substantially unlined-4 of Fig.2, in the direction oithearrow; 5 5 Fig.5 illustrates, theflnished concrete look; and s t l expelling the compressed Ablock from tha mold and for supporting the block during the subsequent removal anddrying periods. The structure or my invention, .inthedorm illustrated in the drawings, .comprlsesside dramas i, I, to which a top plate 3 is rigidly secured; :as by means of bolts :4. 5 vThe mold of thelcinvention is secured to the top surlace oiithis;plateslandlit takes theqiorm of a rectangular llhox- 15. within which adseries cit-rectangular cores 8, 8: are

vertically placed. These 1coresmay iormlpart of the box or they may be; anchored won the top plate '3 as by means of bolts 9, and they constitute the cavitiesiofkthe flnishedublocks. 1 1 5 15M A lid to is, mounted to swing on a pivot-alt not the box Iand a. plate :12 is fastened :to this lid: to rest snugly against the upper surface. of; the box when the cover thereof isuclosed. Itliswnoticed :thatirowsot ribs I33 project from thisplate in alinement with the cavitieslbetween theicores,

5 Claims. (Clu-'-84) lo pletely filled, whereupon the cover thereof 3 is connected to across bar lvl which is-fltted to slidewithin a longitudinalslot or eachnguide :the upper surfaceseofwhich are shown grooved at 15, I G to receive these .rlbsb jsuitable means is provided for tightly locking the lid in closed positioned the box; and such means may comprise a series of latch members I] which are pivotally mounted in position on the lid at [8 to grip the flange *5 0! the box when the lid is closed: In

order to insure a tight jointhit is wellto mount adjusting screws l9 in each latch member.

There. are provided with each machine a great number of interchangeable plates or trays ZO, each 01 Which is shaped to slideover thejeoresj-fi,

1,! ofthe niold and tocoine to rest on thebottom .of mold. Such tray is, in Fig. 16;

mined with rowsor'lndehtations20 winterclosed. Pressure is then applied to raise the bottom plate 20 suificiently to compress the charge within the mold; and this isdoneinthe following manner. A frame 3|! interconnects theside irames l 2 to supporta box-shaped cas ing 31, having a-closed top *3, on "which alrectangular plate 32 normally rests This plate-is periorated at the four corners thereof to receive stems; 34-, the upper ends of which extend through perforations of the top plate 3 and 5 abut the bottom surfaceof the removable bottom plate 20. "Ihriower ends of these stems are shown threaded to: receive clamping nuts for correct vertical adjustment the stems. v"

The side plates 3t, it or "thevcasing tliware transversely grooved to receive a, guide 35, comprising parallel side members 35, SE anchored insaid' grooves. Plates 36, 3; tie these members triQidly together at both ends thereoLand the platen serves to support a cylinder -38; within whichla piston 3! is mounted torreciprocating movement. The piston rod 10 is shown rigidly member. The ends or this crossbar are tumed down to form. pivots 4", M onrwhicharmsfl, 43 are rotatably hung. The lower endsotthese armsareuhung on studsfl,f45 of theframe 30,. A

second pair of arms, 41 arehung on the frame What the other end thereof on horizontally alined studs 48*, to supportat their upper endslrollers Ill-,whichalso rides in the guide slot 35. Bars 51:, 52 interconnect the upperends of the two sets or arms, substantially as indicated in the drawings 5 v Fluid under pressure, from a, suitablesouroe tnotmshown) enters aqvalve at 1 to; how

(through: atwpassage 62 of thevalve stemand a flexible, hose $3 to the space within the cylinder teamed of the piston causing the l ttett advance. Since the pistonrod. is rigidly combined withthe cross bar 4 l and the latter, is operatively connected withthearms 42, 43, tiandlL it fol- ;lowsthat all these partsadvance together. Eunthermore that, because the lower ends otthe :arir s are pivotal-ly fixed onthe stationaryirame so, it is seen that limited vertical movement thereby is. imparted-t0 the, slide 35 and the, casing l -3| mhieh iruvmmthe slide. e mq sm mmrthe or diminish the pressure against the charge within the mold. This is an important feature of the;

invention. A check nut 54 is added'to nut 53 in adjusted position. I 1

lock the The cover Ill may now be swung into open position, whereupon the stem of a valve '65 is turned clockwise from the position indicatedin Fig. 2 until the passage thereof interconnects the intake opening -61 with a pipe 68, which ex tends from the valve .tothe bottom of a vertically disposed cylinder 69. ,Pressure of fluid irom the above named source now entersthis cylinder to push the piston 10 thereof upward. A piston rod H rises from the piston to the plate 32, in which it is-rigidly anchored, the; result being that the rising piston rod carriesthe plate 32 and the stems 33, 34 upward, thereby to pushthe bottom plate 20 and ,the charge of concrete upward through the open mold to the very top thereof. The operator thereupon lifts the plate away from the mold and carries it, with the completed blockthereon, to a curing and drying rack.

, The valve 65 is now returned to the position of Fig. 2, causing the pressure fluid to flow through a pipe" to the upper end of the cylinder 69 positively to return the piston 10 and the parts carried therebyto theinitial positions of these parts, at, the same time forcing the pressurefluid below the piston through a discharge connection 164 back to its source. Finally, the stem of the valve 60 is turned clockwise to connect the intake thereof,- through the passage 62, with a flexible hose 5!! to carry thepressure fluid behind'the piston 39 to return the piston to its initial position, thereby again lowering, the casing 3|;

When the valve 6llis .so turned, it is noticed that a second passage '51 of the stem of the valve .60. connects the hose 63, which is not carrying the inflowing pressure fluid, with a discharge pipe, .15, thereby to permit. the piston 39 to be moved by the pressure fluid. This discharge pipe may also return the fluid to the common pressure souree.-- The mold is now reset in position to receive a new charge of concrete, upon first placinganother bottom plate 2nutherein.

lclaimt. 1. Ina conbrete block-molding machine, a

stand, a mold onsaid stand open at the-top to receive a concrete mixture, a compression member seatable on the bottom of said mold, a plate below the mold parallel with said member, studs rising from-said plate to the underside of the member, a casing vertically movable within the stand, transverse guides on said casing, a slide niovable'within said guides, a cylinder on one end of said guides, a'piston in said cylinder rigidly connected with said slide, arms hungon the stand and pivotally connected with the slide; and means carrying pressurefluid to said cylinder to mov'e said piston and slide thereby to swing said'ar'ms and so to move the casing and plate vertically.

2. In a concrete block' molding -maohine, a

stand, a mold on said stand openat the top to receive a concrete mixture, a compression member seatable on the bottom of said mold, a plate below the mold parallel with said member, studs rising from said plate-toth'e underside ofthe member, a casing vertically movable within the stand, transverse guides on said casing, a slide movablewithin said guides, a cylinder on one end of said guides, a piston in said cylinder rigidly connected with said slide, arms hung on the stand and pivotally" connected with the slide, means carrying pressure fluid to said cylinderto move said piston and slide thereby to swing said arms and soto move the casing and plate vertically, and a-valve controlling the flow of pressure fluid to one end of the cylinder to the other, thereby positively to raise or lower the casing and plate.

3., In a concrete block molding machine, a

standya mold on said stand open at the top to receive a concrete mixture, a compression member seatable on the bottom of said mold, a plate below the mold parallel with said member, studs rising fromthes aid plate to the underside of saidmember, a casing vertically movable within said stand, a slide transversely movable in said casing-means on the casing for moving said slide, connections from the slide to the stand for translating transverse movement of the slide into vertical-movement of the casing thereby to elevate said plate and member, and hydraulicallyactuatedmeans for further elevating the plate and member togexpelthe molded block. I 1

i. In a concrete block molding machine, ,a stand, a mold on said stand for receiving the concrete mixture, a compression member at the bottom of said mold, a casing mounted for .vertical movement within the stand, a slide transversely lmovableiwithin, said casing, hydraulic means including, a'cylinder :on the casing, a piston havingits rod rigidly secured to said slide, connections from the slide to. the stand for translating transverse movement thereof into vertical movement of the plate and. member, means for adjusting the. movement of the piston and the slide, hydraulically actuated means for further elevating the member to? expel the moldedblock, 'and;.valve means positively controlling said vertical movement; of :the: plate and the ;member.

5. In a concreteblock molding machinega stand,.almold on'saidstand, a compression member seatable on'the bottom of said mold,:themold beingla'daptedito receivea'plastic.charge, a cover for? the charged mold, a plate'below. said mold, elements rising from: said plate to the underside of I said member, 'a cylinder vertically. mounted on said stand, a piston in said cylinder having a piston rod anchoredin said plate, hydraulic meansfor elevating said-plate andmember sumciently to compres's'the plastic charge within the mold, and at the sameztime'elevating' thepiston within said cylinder, conduits carrying pressure fluidto' said'cylind'er further to elevate the piston 'and th'e plate upon opening said cover thereby to exp'elthe member'to carry the charge from the mold, a valve controlling said plastic charge compressing means, and a valve in said conduits controlling flow. of pressureifluid to the top and 'bottom' of. said piston. 1 1 r JAMES W. BRISCQE. I

I REFERENCES CITED The following references are of record in the ,file of this patent: i H

PATENTS 

